Log4J - Log4JLog4J What is the use of Log4j? where does it use? Log4j is using for debuging ur code. Its does the same thing as System.out/System.err do. i.e to trace out ur program Log4j is using for debuging ur code.Its does

log4j - Log4Jlog4j give me explanation about log4j,junit?
how i hvae to use them
Hi mamatha,
In Log4J, if you log a message at DEBUG level, and the current Appender is set to only log messages of INFO level and above